33 träffar

ArticleArrhythmias and arrhythmology
Atrial Fibrillation in the Critically Ill Patient

…ischaemic electrocardiographic changes during rapid AF. ST segment depression or T wave inversion can occur without coronary artery disease. Proposed explanations in the source material…

ArticleECG
The ECG in assessment of myocardial reperfusion

…ECG are assessed: Normalization (return) of ST segment elevations Rapid T wave inversion Normalization (return) of ST segment elevations Successful reperfusion results in rapid and…

ArticleECG
Quiz: ECG in athletes

…inversion in leads V1 V3 in athletes age <16 years. B: J point elevation and convex ('domed') ST segment elevation followed by T wave inversion…

ArticleMyocardial ischemia and infarction
Posterior acute myocardial infarction (STEMI)

…positive, it increases the likelihood of posterior ischemia. Such positive T waves are reciprocal (mirror images) to posterior T wave inversions (negative T waves). Moreover…

ArticleProcedurer
Nasogastric tube

Procedurer The insertion itself is rarely the difficult part — it is the confirmation of the position that determines whether the tube is safe. A misplaced…

ArticleProcedurer
Central venous catheter

Procedurer What determines the outcome of a central venous catheter insertion is decided before the needle goes in: the choice of site, the use of…

ArticleProcedurer
Paracentesis

…straightforward: ultrasound to find the fluid, an insertion site in the left lower quadrant lateral to the rectus sheath, and a cell count plus albumin…

ArticleProcedurer
Arterial line

…as part of fluid management. Contraindications Infection, burn or trauma over the insertion site. Insufficient collateral circulation to the hand. Vascular disease in the limb…

ArticleCPR
Cardiac arrest due to pneumothorax

…episodes Iatrogenic events (e.g., during central venous catheter insertion) Underlying lung pathologies In cases of benign pneumothorax, positive pressure ventilation can precipitate a tension…

ArticleEchocardiography
Cardiac tumors

…the remaining ones are malignant. • Secondary cardiac tumours have spread to the heart by metastasis or invasion from surrounding tissue. Differential Diagnostics There are several…

ArticleProcedurer
Laryngeal mask and difficult airway

…larger , since a mask that is too small leaks and gives a poorer seal. Procedure Insertion of the laryngeal mask 1. Check the mask, remove…

ArticleProcedurer
Oesophageal ECG

…4. Estimate the depth of insertion by measuring from the ala of the nose over the earlobe to the middle of the sternum. The depth…

ArticleProcedurer
Pleural aspiration and chest drain

…between regions. Common practice is correction at an INR above 1.5 and a platelet count below 50 × 10⁹/L before drain insertion, while diagnostic…